dross /dros/

1. The scum of melting metals
2. Waste matter
3. Small or waste coal
4. Refuse
5. Anything worthless
6. Rust
7. Lucre

• secondary cells
• secondary coil
• secondary coils
• secondary colour
• secondary colours
• secondary electron
• secondary electrons
• secondary emission
• secondary emissions
• secondary mineral
• secondary minerals
• secondary modern
• secondary moderns
• secondary picket
• secondary picketing
• secondary pickets
• secondary planet
• secondary production
• secondary productions
• secondary radar
• secondary school
• secondary schools
• secondary sexual characteristics
• secondary shut-down system
• secondary shut-down systems